Customer reviews:

Customer Rating:
Summary: Sent mine back, Setpoint drvs awful in Windows 7 x64!
Comment: Bought one of these to replace an old Logitech MX510. System is running Windows 7 Home Premioum x64. Guess What? Logitech Setpoint 6.15 will NOT allow you to map a primary button double click to the middle button of the mouse (the scroll wheel) when you have the primary and secondary buttons reversed in the Devices/Mouse OS configuration. Setpoint uses the function mapped to the PHYSICAL left button of the mouse for the double click which of course becomes a "menu" function if you swap left/right so the middle button winds up sending a double "menu" click (like that is of any use). DUH. Posted about it twice on the Logitech support forum -- SILENCE. Oh, and Setpoint will also considerately reset the swap primary/secondary setting in Devices/Mouse back to unselected on exit from Setpoint, if you have had the audacity to actually tick it (how DARE you use one of their pointing products LEFT-HANDED? GASP!).

Folks -- I know this is mainly a lefty issue, but this is BASIC driver functionality I am talking about, it's not rocket science. Logitech doesn't test their drivers, they just throw them out into the wild and let their customers be their STG.

Also -- the stainless steel finish of this mouse will become severely tarnished within 2 days of owning the product. Right where your palm and fingers contact the finish. And no, it doesn't matter if you have clean hands. Skin oils reacting with the steel finish. Looks pretty nasty.

On the positive side, the dual scroll wheel modes and left/right scrolling functions worked well (of limited applicability however, at least in my case or in any game I can think of).

Wound up sending mine back to Amazon for a refund (THANKS AMAZON YOU ROCK ON RETURNS) Bought a Logitech MX518 instead (which ALSO shares the double click issue, but I did find a fix for that via a free 32-bit 3rd-party app that hooks into the mouse API to intercept and re-map button presses).

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Customer Rating:
Summary: Not for small hands
Comment: I have many mice, but with this one, I notice my hand cramps up with just a short time using it. When I use my G9x, I have no problem. I think it is just the shape of this mouse, and the left and right click buttons seem to require a little more effort to press and hold. This may lead to hand fatigue.
I believe the problem is that this mouse is too long for my small hands, and with my thomb resting on the thumb button, my fingers do not the the left and right keys in the easiest to press spot. So if your glove size is 6-7, stay away from this and get the Logitech G9x instead or the Razor Orochi, both of which are smaller mice.

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Customer Rating:
Summary: Not perfect but worry free mouse
Comment: The one issue i have with this mouse is the three thumb buttons being a bit too high. Where my thumb naturally rests and where it has to be to push the thumb buttons is a bit off (at least for me.) The middle thumb button is rather hard to find but eventually you will get used to it. The cord is some sort of braided material and is very sturdy. The warranty service of Logitech is excellent and adds a LOT of value to this mouse. I think this mouse is worth it's price.

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Customer Rating:
Summary: Small but significant ergonomics issues.
Comment: Firstly I do not like the texture on this mouse at all. The hard surface is too slick and it is hard to get a good grip on this mouse. Also there is only a very small place to put your ring finger, unlike the mx500. Also my pinky had no place to rest on this mouse. This mouse is not identical to an mx500 (or 10 or 18) in shape although it is very similar.

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Customer Rating:
Summary: Great mouse, amazing feal...for a mouse.
Comment: First "gaming" mouse i have ever owned. Its great for that and every day use. Its responsive and the on the fly adjustment is actually useful, surprisingly enough. It has a great feel and I like how its textured on the thumb area. It has good grip. The weigh adjustment has also come in handy. At first i just made it as heavy as possible but as i used it I adjusted it and its really a good feature. Great mouse. I enjoy it.

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